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Bitcoin is a crypto currency, with the creation and the transfer of the bitcoins being based on a protocol that does not depend on the central authority. The coins can be transferred through computers or through smartphones and related devices, without the necessity of having a financial institution as an intermediate. This concept was established by Satoshi Nakamoto in 2008 and it was geared towards the world of electronic cash systems. If you understand more about this topic on a professional level, then you have a better chance to enjoy the advantages of being a freelancer at Freelancer.com.

Bitcoin has its own technical part that needs to be addressed by professionals. If you are one of them, then you should be on a platform that ensures the consistency of job posting by clients. When working as a bitcoin freelancer at Freelancer.com, you will have access to many of the jobs posted by clients from all over the world and bid on those that are within your professional level. There is too much to enjoy while working at the leading freelancer platform online, including getting paid at rates that your services deserve, giving you the encouragement you need to keep on working on more Bitcoin projects.

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    55 jobs found, pricing in USD

    I need Solidity and ETH chain contract based app. It's for official purpose , I have template and you need built it and New some features and common security

    $2615 (Avg Bid)
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    9 bids

    REQUIREMENTS FOR BOT PROGRAMMING OBJECTIVE The objective of the project consists of the programming of a bot that allows the automatic execution of purchases and sales of cryptocurrencies in different exchanges, through the use of the api keys.- FUNCTIONING 1. First: Once the parameters that will be determined for the execution of the trade operation have been fulfilled, the bot must proceed w...

    $23 / hr (Avg Bid)
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    5 bids
    Bitcoin & Backend developer 6 days left
    VERIFIED

    Hi there, I'm looking for a backend developer for a Bitcoin and Bitcoin Lighting network. It can be written in Python or C++. It's in the FinTech area. You should have experience with security and Bitcoin transactions and how cryptocurrency works. The backend has to be written from scratch, so it is important that you write clean and good code and think proactively. Please send me your...

    $27 / hr (Avg Bid)
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    13 bids
    Crypto mining 6 days left

    I need an urgent freelancer who can work under crypto mining company as a mining agent

    $3202 (Avg Bid)
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    7 bids
    Crypto Mining 6 days left

    I need an urgent freelancer who can work under crypto mining company as a mining agent

    $460 (Avg Bid)
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    9 bids

    I need an urgent freelancer who can work under crypto mining company as a mining agent

    $437 (Avg Bid)
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    4 bids
    Crypto mining 6 days left

    I need an urgent freelancer who can work under crypto mining company as a mining agent

    $516 (Avg Bid)
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    6 bids

    BLOCKCHAIN SPECIALIST IS URGENTLY REQUIRED TO HELP IN LAUNCHING FORK CRYPTOCURRENCY FROM MY COMPUTER. WE PAY GOOD MONEY!!! I need to make a fork of the Dash cryptocurrency as soon as possible. Deadline - 3 days

    $1125 (Avg Bid)
    NDA
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    2 bids

    I want to build me an exchange which will allow users to allow Crypto trading of various tokens and coins.

    $1027 (Avg Bid)
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    6 bids

    I need Solidity and smart chain contract based app. It's for official purpose , I have template and you need built it and New some features and common security

    $2699 (Avg Bid)
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    22 bids

    Hello I have already a wallet Script that I just need some functions to be added in the script very well , so I need wallet expert who can handle this for me

    $491 (Avg Bid)
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    12 bids

    able to help restore the Bitcoin private key that I forgot, I hope you can help me

    $9500 (Avg Bid)
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    5 bids

    - same exact interface and same functions as [login to view URL] only the P2P trading Escrow part. - website holds Escrow funds until seller Approved he got Paid. - buyer and seller can trade crypto with same options as in c2cbinancecom/en. - website deducts fees from the Cryptocurrency being sold . - website owner have a back-end interface to control fees amounts and all content on website. -...

    $2387 (Avg Bid)
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    16 bids
    Generate nft 5 days left
    VERIFIED

    Hi I will give image and ideas and i need 10k NFTs generated. Also need help posting them online

    $331 (Avg Bid)
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    8 bids

    I need help launching my NFT Collection. I'm trying to decide to either put them on Solana or Ethereum. Also, I may need help tagging the NFTs in the collection once they're up. I also need help scoping out the cost of this effort.

    $20 (Avg Bid)
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    3 bids
    Smart contract -- 3 5 days left
    VERIFIED

    Looking for serious smart contract dev, to do some modifications on an existing smart contract on BSC -1 i am not paying outside freelancer (or i will report) -2 after work finish, test token must be deployed and listed on pancakeswap for testing before deploying the final token. -3 dev must provide his BNB for deploying and add liquidity for his testing. I will provide BNB when i test. -4 i am...

    $637 (Avg Bid)
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    16 bids
    I am a blockchain expert 5 days left
    VERIFIED

    I am a blockchain expert well versed with token creation, defi, NFTs.

    $50 / hr (Avg Bid)
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    8 bids
    Blockchain 5 days left
    VERIFIED

    Hi, guys looking for someone capable to rescue coins, that we send erc20 token to bep20 wrongly.

    $891 (Avg Bid)
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    3 bids

    Hello, we need a skilled full stack developer which is also familiar with the cryptocurrency world in order to customize a script for us. The original Script described including knowledge requirements: (installation pdf is attached) -PHP7 (7.2 recommended) / Laravel -SQL Database (MySQL,PostgreSQL, SQLite, SQL Server) -Elasticsearch (Search interface that will keep track of search record...

    $592 (Avg Bid)
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    17 bids
    Solidity Eth Developer 5 days left
    VERIFIED

    Looking for expert smart contracts developer in solidity who can write customized codes and functionality.

    $1441 (Avg Bid)
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    9 bids

    I want to build a cryptocurrency with my own cryptocurrency exchange. Working like a bank.

    $28138 (Avg Bid)
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    7 bids

    Hey I am looking for an awesome person who is very skilled when it comes to mining crypto. I want your expertise for building a mining euqipment for me according to your advice. I only want bids from experts in this area so please give me some references for similar jobs you done thank you

    $183 (Avg Bid)
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    3 bids

    We are searching for developer, who is an expert on Ethereum blockchain and Binance Smart Chain. We need a smart contract with the following specifics: 1. Burn enabled (also by sending to zero address) 2. Option to set “manager” address 3. Option to stop token (can only be run by “manager” address) 4. Option to block / unblock funds on a chosen Ethereum address that holds ...

    $1309 (Avg Bid)
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    25 bids

    I need you to write a whitepaper for the token. I need 15 pages. Let me know if you have any questions. Further information will provide through the chatbox.

    $25 (Avg Bid)
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    29 bids
    My seed node to receive token 5 days left
    VERIFIED

    I need built a application to deposit/withdraw automation on blockchain for BTC, ERC20, XRP, ADA, TRC20, BEP20, SOL,.....

    $1668 (Avg Bid)
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    22 bids

    3 hour consulting advice needed to design an api data model and smart contract design approach for NFT auction process. No coding is needed, but the candidate must have previous expertise in writing and deploying Dapps Deliverable 1. Three 1:1 one hour sessions guiding us in arriving needed clarity on below points - how to design an auction in blockchain - escrow service in crypto - wrapped eth a...

    $850 (Avg Bid)
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    7 bids

    Hello Everyone I need solidity developer who have experience on VUE JS to deploy contracts and reskin entire website which has only few screens

    $550 (Avg Bid)
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    36 bids

    Dear Freelancers , I want o build my own mining pool like [login to view URL] , where users can select any coin as per their choice for mining . Any Experienced freelancer welcome for discussion with previous example he did something like this . Its a serious project and only serious developer can bid along with example. Regards! Sandeep

    $503 (Avg Bid)
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    We are looking for a frontend dev that has experience in web3 and skilled in react + typescript to work on our existing project. Preferable if you had past experience working on crypto defi projects. Expertise required - react js, typescript, css, Javascript Experience required - web3, solidity Pay in monthy basis provided you able complete the first task given by us.

    $14 / hr (Avg Bid)
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    17 bids
    binance payment gateway 4 days left
    VERIFIED

    i want to know if there's possibility to use binance in website integration to allow users pay in crypto without knowledge about cripto, they should be able to pay using card or crypto. i know binance has "binance pay" option but i want to integrate it to my website to renew his subscriptions

    $235 (Avg Bid)
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    3 bids

    i have coin on tomo chain need to make it live with all correct info

    $174 (Avg Bid)
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    4 bids

    Hello, We are working on new coin made for market payments and we need some nice environment to test it and then to sell merch etc on it. I would like to find somebody who would make the exact same nice website as cannazon is with all features, functions and awesome design (but main color would not be green) But with two features/functions added- email contacts (can be seen in vendors profile o...

    $709 (Avg Bid)
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    27 bids

    Hi Aleksandar M., I noticed your profile and would like to offer you my project. We can discuss any details over chat.

    $458 (Avg Bid)
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    6 bids
    Create our own Cryptocurrency 4 days left
    VERIFIED

    Hi, We are group of Chinese people in NYC. We want to develop our own Cryptocurrency. Can you help us to identify which is suitable for our needs? What should we need? Tokens or Coins? Difference between coins and Tokens? We have Restaurant, Hotel, Loan and a Online store. We want to implement reward system using Cryptocurrency. -How long it will take to you to create Cryptocurrency for us? -...

    $19008 (Avg Bid)
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    16 bids
    p2p crypto trading 3 days left
    VERIFIED

    - same exact interface and same functions as [login to view URL] only the P2P trading Escrow part. - website holds Escrow funds until seller Approved he got Paid. - buyer and seller can trade crypto with same options as in c2cbinancecom/en. - website deducts fees from the Cryptocurrency being sold . - website owner have a back-end interface to control fees amounts and all content on website. - web...

    $737 (Avg Bid)
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    7 bids
    BlockChain Dex Developer 3 days left
    VERIFIED

    I would like the prospective developer to design a arbitrage bot that can look for opportunity in the following exchages: Uniswap V2 SushiSwap Curve Uniswap V3 1inch Balancer v1 Kyberswap The software will look for the best opportunities on the above DEX's rather than the user entering the respective tokens. The process will be simple but efficient and use the below process Find all prices ...

    $1229 (Avg Bid)
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    22 bids
    Build me a 24/7 crypto system 3 days left
    VERIFIED

    Hello, I'd like to work with someone who can help build a crypto bot which can trade various coins every day, 24/7 for passive income. Serious inquiries only! Thanks

    $145 (Avg Bid)
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    7 bids
    blockchain expert required 3 days left
    VERIFIED

    i need blockchain expert to develop front end of an open source crypto exchange [login to view URL] this is quick job for an expert, we need nice UI development and deployment of script. only experts can bid pls share your past experience like required task

    $565 (Avg Bid)
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    10 bids

    need a crypto wallet app developer. to create wallet app, token and api

    $1471 (Avg Bid)
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    8 bids

    We are a trading community currently based in London and we are after an experienced member who is both skilled and passionate about the financial market to join us. You will be responsible for liaising with other traders on our platform, coming up with creative and profitable strategies and also supporting our community with any questions they may have. The perfect candidate for this role is exp...

    $23 / hr (Avg Bid)
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    12 bids
    Solana Blockchain Developer 2 days left
    VERIFIED

    Looking for solana blockchain developer to create smart contracts and defi app and specially with NFTs

    $1660 (Avg Bid)
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    5 bids

    - Design a web/apps for me to select coin/fill in amount/fill in rules for bot to execute. - Bot able to see the live market price according to Binance. - Must be able to API link to Binance. - Auto trade (Buy/Sell) in binance spot. - Bot able to view amount of coin in USDT. amount of coin in quantity, average buying price, market price, , Replenishment times, PnL%. - Entry whenever coin successfu...

    $1261 (Avg Bid)
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    17 bids

    I need a application to send tokens to multiple address in single transaction on binace chain.. We have tokens on BEP20.

    $176 (Avg Bid)
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    2 bids

    complete peer-to-peer exchange platform needed with installed my coin node. If you have done such task before that would be awesome....cause we need super fast....

    $1184 (Avg Bid)
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    24 bids
    Blockchain developer -- 2 1 day left
    VERIFIED

    Greetings, we are looking for a CTO / Developer for an exciting blockchain project. we want to develop a project from scratch.

    $3000 - $5000
    Sealed
    $3000 - $5000
    6 bids
    DEFI PROJECT 1 day left
    VERIFIED

    GREETINGS, we want to offer a blockchain-based defi token .

    $250 - $750
    Sealed
    $250 - $750
    15 bids

    We need a blockchain specialist and programmer to implement digital currency wallets on btc/bep2/bep20/trc20/trc10/erc20 networks. We want to implement a full node wallet We want to have an api to connect an exchange to it

    $208 (Avg Bid)
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    I need to do a presale for X amount and my token contract isn’t finished yet. I need a proxy token to sell X amount and have purchasers have a IOU token until I launch my token contract at a later point migrating the IOU tokens fo me the real deal. Let me know!

    $274 (Avg Bid)
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    Hi! Platform: Ronin Wallet Explorer: [login to view URL] I require functions preferably echo in nodejs that do the following ... We have a filter to select some contracts /axies, and we want to buy / pay for these, so we require the functions using ethers or web3 to be able to pay for contracts/axies and buy them. The code must be explicit, and of course code to handle errors. If you have que...

    $200 (Avg Bid)
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    2 bids
    Etherium Mining expert 13 hours left
    VERIFIED

    Hello we need an expert with cryptocurrency mining setup. Tasks: Test our GPU 12PCS NVIDIA GTX 3060 LHR (+ unlock them) Find for us suitable pool Setup the mining account and provide us details how to manage them.

    $138 / hr (Avg Bid)
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    12 bids

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